—What did you say to Lily just now? She looked so happy. —I praised her new hair style, saying, "___

题干

—What did you say to Lily just now? She looked so happy.
—I praised her new hair style, saying, "______."

A：you look younger and more beautiful

B：she is more beautiful and younger

C：you looked more beautiful and younger

D：she was more beautiful and younger

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A

某同学对若干块矿石样品中的碳酸钙的质量分数进行检测，采用了以下的办法：取用8g这种石灰石样品，把40g稀盐酸分四次加入，测量过程所得数据见下表（已知石灰石样品中含有的杂质不溶于水，不与盐酸反应）．请计算：